RE:Why are they not drilling?I think that there can only be one answer that makes sense: BECAUSE THEY DON'T NEED TO!
Why else? It is not as though they don't have the funds to do it. Furthermore, since they originally planned to do some, it is reasonable to assume that they had the drilling rig linesd up.
The suggestion that there would not be an locations worth drilling makes no sense at all.
The only explanation that makes sense to me is that they are so far advanced with and confident about making a deal with a particular buyer that they are not bothering with that. If they were not completely confident, they would be doing some drilling so as not to waste this drilling season.
I think Not2Smart also summed it up quite well in a recent post.